/Engine/Plugins/Runtime/GeometryCache/Source/GeometryCache/Public/GeometryCacheConstantTopologyWriter.h
Move the position data to the cache track and close the TrackWriter. Once closed, the track will be added to the geometry cache and the TrackWriter cannot be used anymore.
true if successfully write data and close the track writer.
bool WriteAndClose &40; TArrayView< TArray< FVector3f >> PositionsToMoveFrom &41;